adjust availability of main menu items based on game state

apps/openmw/mwgui/mainmenu.cpp

@@ -15,56 +15,25 @@ namespace MWGui
 
     MainMenu::MainMenu(int w, int h)
         : OEngine::GUI::Layout("openmw_mainmenu.layout")
-        , mButtonBox(0)
+        , mButtonBox(0), mWidth (w), mHeight (h)
     {
-        onResChange(w,h);
+        updateMenu();
     }
 
     void MainMenu::onResChange(int w, int h)
     {
-        setCoord(0,0,w,h);
+        mWidth = w;
+        mHeight = h;
 
-
+        updateMenu();
-        if (mButtonBox)
-            MyGUI::Gui::getInstance ().destroyWidget(mButtonBox);
-
-        mButtonBox = mMainWidget->createWidget<MyGUI::Widget>("", MyGUI::IntCoord(0, 0, 0, 0), MyGUI::Align::Default);
-        int curH = 0;
-
-        std::vector<std::string> buttons;
-        buttons.push_back("return");
-        buttons.push_back("newgame");
-        buttons.push_back("loadgame");
-        buttons.push_back("savegame");
-        buttons.push_back("options");
-        //buttons.push_back("credits");
-        buttons.push_back("exitgame");
-
-        int maxwidth = 0;
-
-        mButtons.clear();
-        for (std::vector<std::string>::iterator it = buttons.begin(); it != buttons.end(); ++it)
-        {
-            MWGui::ImageButton* button = mButtonBox->createWidget<MWGui::ImageButton>
-                    ("ImageBox", MyGUI::IntCoord(0, curH, 0, 0), MyGUI::Align::Default);
-            button->setProperty("ImageHighlighted", "textures\\menu_" + *it + "_over.dds");
-            button->setProperty("ImageNormal", "textures\\menu_" + *it + ".dds");
-            button->setProperty("ImagePushed", "textures\\menu_" + *it + "_pressed.dds");
-            MyGUI::IntSize requested = button->getRequestedSize();
-            button->eventMouseButtonClick += MyGUI::newDelegate(this, &MainMenu::onButtonClicked);
-            mButtons[*it] = button;
-            curH += requested.height;
-
-            if (requested.width > maxwidth)
-                maxwidth = requested.width;
-        }
-        for (std::map<std::string, MWGui::ImageButton*>::iterator it = mButtons.begin(); it != mButtons.end(); ++it)
-        {
-            MyGUI::IntSize requested = it->second->getRequestedSize();
-            it->second->setCoord((maxwidth-requested.width) / 2, it->second->getTop(), requested.width, requested.height);
     }
 
-        mButtonBox->setCoord (w/2 - maxwidth/2, h/2 - curH/2, maxwidth, curH);
+    void MainMenu::setVisible (bool visible)
+    {
+        if (visible)
+            updateMenu();
+
+        OEngine::GUI::Layout::setVisible (visible);
     }
 
     void MainMenu::onButtonClicked(MyGUI::Widget *sender)
@@ -98,4 +67,61 @@ namespace MWGui
         }
     }
 
+    void MainMenu::updateMenu()
+    {
+        setCoord(0,0, mWidth, mHeight);
+
+
+        if (mButtonBox)
+            MyGUI::Gui::getInstance ().destroyWidget(mButtonBox);
+
+        mButtonBox = mMainWidget->createWidget<MyGUI::Widget>("", MyGUI::IntCoord(0, 0, 0, 0), MyGUI::Align::Default);
+        int curH = 0;
+
+        MWBase::StateManager::State state = MWBase::Environment::get().getStateManager()->getState();
+
+        std::vector<std::string> buttons;
+
+        if (state==MWBase::StateManager::State_Running)
+            buttons.push_back("return");
+
+        buttons.push_back("newgame");
+
+        /// \todo hide, if no saved game is available
+        buttons.push_back("loadgame");
+
+        if (state==MWBase::StateManager::State_Running)
+            buttons.push_back("savegame");
+
+        buttons.push_back("options");
+        //buttons.push_back("credits");
+        buttons.push_back("exitgame");
+
+        int maxwidth = 0;
+
+        mButtons.clear();
+        for (std::vector<std::string>::iterator it = buttons.begin(); it != buttons.end(); ++it)
+        {
+            MWGui::ImageButton* button = mButtonBox->createWidget<MWGui::ImageButton>
+                    ("ImageBox", MyGUI::IntCoord(0, curH, 0, 0), MyGUI::Align::Default);
+            button->setProperty("ImageHighlighted", "textures\\menu_" + *it + "_over.dds");
+            button->setProperty("ImageNormal", "textures\\menu_" + *it + ".dds");
+            button->setProperty("ImagePushed", "textures\\menu_" + *it + "_pressed.dds");
+            MyGUI::IntSize requested = button->getRequestedSize();
+            button->eventMouseButtonClick += MyGUI::newDelegate(this, &MainMenu::onButtonClicked);
+            mButtons[*it] = button;
+            curH += requested.height;
+
+            if (requested.width > maxwidth)
+                maxwidth = requested.width;
+        }
+        for (std::map<std::string, MWGui::ImageButton*>::iterator it = mButtons.begin(); it != mButtons.end(); ++it)
+        {
+            MyGUI::IntSize requested = it->second->getRequestedSize();
+            it->second->setCoord((maxwidth-requested.width) / 2, it->second->getTop(), requested.width, requested.height);
+        }
+
+        mButtonBox->setCoord (mWidth/2 - maxwidth/2, mHeight/2 - curH/2, maxwidth, curH);
+
+    }
 }

apps/openmw/mwgui/mainmenu.hpp

@@ -7,17 +7,26 @@ namespace MWGui
 
     class MainMenu : public OEngine::GUI::Layout
     {
+            int mWidth;
+            int mHeight;
+
         public:
+
             MainMenu(int w, int h);
 
             void onResChange(int w, int h);
 
+            virtual void setVisible (bool visible);
+
         private:
+
             MyGUI::Widget* mButtonBox;
 
             std::map<std::string, MWGui::ImageButton*> mButtons;
 
             void onButtonClicked (MyGUI::Widget* sender);
+
+            void updateMenu();
     };
 
 }